Perks (Killing Floor)

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Perks are a feature of Killing Floor that give the player certain bonuses either for their weapons (damage, reload speed, etc.) or their character (high damage resistance, etc.). There are 7 perks in total:

Field Medic

The field medic specialises in healing others with a variety of tools such as the syringe, the MP7M, and so on. It takes a support role.

Tactical advantage: The medic is a fast running strong armor tank with ranged healing (alt fire on medical weapons) as well as close healing syringe. It will spawn with armor from level 5 and above.

Field Medic
Rank	Requirements	Medic Guns		Medic						Spawn equipment
	Heal*	Larger Clips	Discount	Better Armor	discount Armor	Syringe Recharge	Potent Healing	Bloat Bile Damage	Movement Speed
—	—	—	75%	—	10%	+10%	+10%	-10%	—	—
★	200	+20%	77%	+10%	20%	+25%	+25%	-25%
★★	750	+40%	79%	+20%	30%	+50%		-50%	+5%
★★★	4 000	+60%	81%	+30%	40%	+75%	+50%		+10%
★★★★	12 000	+80%	83%	+40%	50%	+100%			+15%
★★★★★	25 000	+100%	85%	+50%	60%	+150%		-75%	+20%	Body Armor
☆	100 000		87%	+75%	70%	+200%	+75%		+25%	Body Armor Medic Gun
*With the MP7M, MP5M, M7A3M or Schneidzekk Medic Gun.

Support Specialist

The support specialist specialises in shotguns, and takes a support role. It is capable of clearing out trash as well as dealing heavy damage to large targets. Grenades does more damage and you can carry additional ones. Increased weld rate.

Support Specialist
Rank	Requirements		Shotguns				Carry Weight	Spawn equipment	Grenades		Welding speed/ Unwelding speed
	Damage*	Welding/ Unwelding*	Damage	Penetration	Extra ammo	Discount			Capacity	Damage
—	—	—	+10%	+10%	—	10%	—	—	—	—	10%
★	25 000	2 000		+18%	+10%	20%	+15%		+20% (6)	+5%	+25%
★★	100 000	7 000	+20%	36%	+20%	+30%	+20%		+40% (7)	+10%	+50%
★★★	500 000	35 000	+30%	+54%	+25%	40%	+25%		+60% (8)	+20%	+75%
★★★★	1 500 000	120 000	+40%	+72%		50%	+30%		+80% (9)	+30%	+100%
★★★★★	3 500 000	250 000	+50%	+90%		60%	+50%	Shotgun	+100% (10)	+40%	+150%
☆	5 500 000	370 000	+60%		+30%	70%	+60%	Hunting Shotgun	+120%	+50%
*With the Shotgun, HSG-1 Shotgun, Hunting Shotgun, Combat Shotgun, AA12 Shotgun or Vlad The Impaler.

Sharpshooter

The sharpshooter specialises in rifles. Its role is using precision shots to take down medium to large enemies.

Spawns with LAR (Lever Action Rifle) at level 5 and crossbow at level 6.

Sharpshooter
Rank	Requirements	Pistols, Rifle, Crossbow, M14, and M99					Spawn equipment
	HeadShot Kills*	Damage	Recoil	Reload Speed	Extra Headshot Damage	Discount
—	—	+5%	—	—	+5%	10%	—
★	30	+10%	-25%	+10%	+10%	20%
★★	100	+15%	-50%	+20%	+20%	30%
★★★	700	+20%	-75%	+30%	+30%	40%
★★★★	2 500	+30%		+40%	+40%	50%
★★★★★	5 500	+50%		+50%	+50%	60%	Lever Action Rifle
☆	8 500	+60%		+60%		70%	Crossbow
*With the 9mm(dual), MK23(dual), 44 Magnum(dual), Deagle(dual), LAR, Crossbow, M14EBR, or M99.

Commando

The commando specialises in assault rifles. Its role is crowd-control, and can assist in taking down the big guys.

Rank	Requirements		Assault rifles					Spawn equipment	Detection		Zed-time Extensions
	Damage*	Stalkers*	Damage	Recoil	Capacity	Discount	Reload Speed		Cloak	Health
—	—	—	+5%	−5%	—	10%	+5%	—	4 m	—	—
★	25 000	30	+10%	−10%	+10%	20%	+10%		8 m	4 m
★★	100 000	100	+20%	−15%	+20%	30%	+15%		10 m	7 m
★★★	500 000	350	+30%	−20%	+25%	40%	+20%		12 m	10 m	1
★★★★	1 500 000	1 200	+40%	−30%		50%	+25%		14 m	13 m	2
★★★★★	3 500 000	2 400	+50%			60%	+30%	Bullpup	16 m	16 m	3
☆	5 500 000	3 600		−40%		70%	+35%	AK47			4
*With the Bullpup, AK47, M4, SCAR Mk 17 and FN FAL.

Berserker

The berserker specialises in melee weapons (such as knife, katana or axe). As it levels up, it gains movement speed, attack speed (melee weapons) and damage resistance. Spawns with a chainsaw at level 6.

Berserker
Rank	Requirements	Melee Weapons				Berserker		Zed-time Extensions	Spawn equipment
	Damage*	Damage	Attacks	Movement	Discount	Bloat Bile damage	All Damage Resistance
—	—	+10%	—	+5%	10%	-10%	—	—	—
★	25000	+20%	+5%	+10%	20%	-25%	5%
★★	100 000	+40%	+10%	+15%	30%	-35%	10%	1
★★★	500 000	+60%		+20%	40%	-50%	15%	2
★★★★	1 500 000	+80%	+15%		50%	-65%	20%	3
★★★★★	3 500 000	+100%	+20%		60%	-75%	30%	4	Machete
☆	5 500 000		+25%	+30%	70%	-80%	40%		Body Armor Axe
*With the Machete, Axe, Chainsaw, Katana, Dwarfs!? Axe , Claymore, Buzzsaw Bow , Scythe or Combat Knife.

Firebug

The firebug specialises in fire-based weapons. Its role is crowd control and dealing damage over time.

Firebug
Rank	Requirements	Flame Weapon					Fire Resistance	Spawn equipment
	Damage*	Damage	Reload Speed	Extra ammo	Discount	Extra Flamethrower Range
—	—	+5%	—	—	10%	—	50%	—
★	25 000	+10%	+10%	+10%	20%	—	60%
★★	100 000	+20%	+20%	+20%	30%	—	70%
★★★	500 000	+30%	+30%	+30%	40%	+50%	80%
★★★★	1 500 000	+40%	+40%	+40%	50%		90%
★★★★★	3 500 000	+50%	+50%	+50%	60%	+100%	100%	MAC10
☆	5 500 000	+60%	+60%	+60%	70%			Body Armor FlameThrower
*With the FlameThrower, Trenchgun, MAC10, Husk Gun or Flare Revolver(dual).

Demolitions

The demolitions perk specialises in explosive-based weapons. It has mixed roles; it is effective at both crowd-control as well as taking on the larger enemies.

Demolitions
Rank	Requirements	Explosives						Spawn equipment
	Damage*	Damage	Resistance	Discount Remote Explosives	Grenade Capacity	More PipeBomb	Discount
—	—	5%	25%	50%	—	—	10%	—
★	25 000	10%	30%	54%	20%	3	20%
★★	100 000	20%	35%	58%	40%	4	30%
★★★	?	30%	40%	62%	60%	5	40%
★★★★	?	40%	45%	66%	80%	6	50%
★★★★★	?	50%	50%	70%	100%	7	60%	M79
☆	?	60%	55%	74%	120%	8	70%	M79 Pipe Bomb
*With the LAW, Pipe Bomb, M79, M32, M4 203 or Grenade.